From issues-return-131-archive-asf-public=cust-asf.ponee.io@zookeeper.apache.org Mon Jun 17 08:23:02 2019 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [207.244.88.153]) by mx-eu-01.ponee.io (Postfix) with SMTP id 5727F18062B for ; Mon, 17 Jun 2019 10:23:02 +0200 (CEST) Received: (qmail 57967 invoked by uid 500); 17 Jun 2019 08:23:01 -0000 Mailing-List: contact issues-help@zookeeper.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@zookeeper.apache.org Delivered-To: mailing list issues@zookeeper.apache.org Received: (qmail 57958 invoked by uid 99); 17 Jun 2019 08:23:01 -0000 Received: from mailrelay1-us-west.apache.org (HELO mailrelay1-us-west.apache.org) (209.188.14.139) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 17 Jun 2019 08:23:01 +0000 Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id 08F17E02E3 for ; Mon, 17 Jun 2019 08:23:01 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id BBF8F24617 for ; Mon, 17 Jun 2019 08:23:00 +0000 (UTC) Date: Mon, 17 Jun 2019 08:23:00 +0000 (UTC) From: "Roland Johann (JIRA)" To: issues@zookeeper.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (ZOOKEEPER-2938) Server is unable to join quorum after connection broken to other peers MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/ZOOKEEPER-2938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16865427#comment-16865427 ] Roland Johann commented on ZOOKEEPER-2938: ------------------------------------------ I see this behavior at 3.4.14 as well. Restart the leader solves the issue > Server is unable to join quorum after connection broken to other peers > ---------------------------------------------------------------------- > > Key: ZOOKEEPER-2938 > URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2938 > Project: ZooKeeper > Issue Type: Bug > Affects Versions: 3.4.6 > Reporter: Abhay Bothra > Priority: Major > > We see the following logs in the node with {{myid: 1}} > {code} > 2017-11-08 15:06:28,375 [myid:1] - INFO [WorkerSender[myid=1]:QuorumCnxManager@193] - Have smaller server identifier, so dropping the connection: (2, 1) > 2017-11-08 15:06:28,375 [myid:1] - INFO [WorkerSender[myid=1]:QuorumCnxManager@193] - Have smaller server identifier, so dropping the connection: (3, 1) > 2017-11-08 15:07:28,375 [myid:1] - INFO [WorkerReceiver[myid=1]:FastLeaderElection@597] - Notification: 1 (message format version), 1 (n.leader), 0x28e000a8750 (n.zxid), 0x1 (n.round), LOOKING (n.state), 1 (n.sid), 0x28e (n.peerEpoch) LOOKING (my state) > 2017-11-08 15:07:28,375 [myid:1] - INFO [WorkerSender[myid=1]:QuorumCnxManager@193] - Have smaller server identifier, so dropping the connection: (2, 1) > 2017-11-08 15:07:28,376 [myid:1] - INFO [WorkerSender[myid=1]:QuorumCnxManager@193] - Have smaller server identifier, so dropping the connection: (3, 1) > 2017-11-08 15:08:28,375 [myid:1] - INFO [WorkerReceiver[myid=1]:FastLeaderElection@597] - Notification: 1 (message format version), 1 (n.leader), 0x28e000a8750 (n.zxid), 0x1 (n.round), LOOKING (n.state), 1 (n.sid), 0x28e (n.peerEpoch) LOOKING (my state) > 2017-11-08 15:08:28,376 [myid:1] - INFO [WorkerSender[myid=1]:QuorumCnxManager@193] - Have smaller server identifier, so dropping the connection: (2, 1) > 2017-11-08 15:08:28,376 [myid:1] - INFO [WorkerSender[myid=1]:QuorumCnxManager@193] - Have smaller server identifier, so dropping the connection: (3, 1) > 2017-11-08 15:09:28,376 [myid:1] - INFO [WorkerReceiver[myid=1]:FastLeaderElection@597] - Notification: 1 (message format version), 1 (n.leader), 0x28e000a8750 (n.zxid), 0x1 (n.round), LOOKING (n.state), 1 (n.sid), 0x28e (n.peerEpoch) LOOKING (my state) > 2017-11-08 15:09:28,376 [myid:1] - INFO [WorkerSender[myid=1]:QuorumCnxManager@193] - Have smaller server identifier, so dropping the connection: (2, 1) > 2017-11-08 15:09:28,376 [myid:1] - INFO [WorkerSender[myid=1]:QuorumCnxManager@193] - Have smaller server identifier, so dropping the connection: (3, 1) > 2017-11-08 15:10:28,376 [myid:1] - INFO [WorkerReceiver[myid=1]:FastLeaderElection@597] - Notification: 1 (message format version), 1 (n.leader), 0x28e000a8750 (n.zxid), 0x1 (n.round), LOOKING (n.state), 1 (n.sid), 0x28e (n.peerEpoch) LOOKING (my state) > 2017-11-08 15:10:28,376 [myid:1] - INFO [WorkerSender[myid=1]:QuorumCnxManager@193] - Have smaller server identifier, so dropping the connection: (2, 1) > 2017-11-08 15:10:28,377 [myid:1] - INFO [WorkerSender[myid=1]:QuorumCnxManager@193] - Have smaller server identifier, so dropping the connection: (3, 1) > {code} > On the nodes with {{myid: 2}} and {{myid: 3}}, we see connection broken events for {{myid: 1}} > {code} > 2017-11-07 02:54:32,135 [myid:2] - WARN [RecvWorker:1:QuorumCnxManager$RecvWorker@780] - Connection broken for id 1, my id = 2, error = > java.net.SocketException: Connection reset > at java.net.SocketInputStream.read(SocketInputStream.java:209) > at java.net.SocketInputStream.read(SocketInputStream.java:141) > at java.net.SocketInputStream.read(SocketInputStream.java:223) > at java.io.DataInputStream.readInt(DataInputStream.java:387) > at org.apache.zookeeper.server.quorum.QuorumCnxManager$RecvWorker.run(QuorumCnxManager.java:765) > 2017-11-07 02:54:32,135 [myid:2] - WARN [RecvWorker:1:QuorumCnxManager$RecvWorker@783] - Interrupting SendWorker > 2017-11-07 02:54:32,135 [myid:2] - WARN [SendWorker:1:QuorumCnxManager$SendWorker@697] - Interrupted while waiting for message on queue > java.lang.InterruptedException > at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.reportInterruptAfterWait(AbstractQueuedSynchronizer.java:2014) > at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2088) > at java.util.concurrent.ArrayBlockingQueue.poll(ArrayBlockingQueue.java:418) > at org.apache.zookeeper.server.quorum.QuorumCnxManager.pollSendQueue(QuorumCnxManager.java:849) > at org.apache.zookeeper.server.quorum.QuorumCnxManager.access$500(QuorumCnxManager.java:64) > at org.apache.zookeeper.server.quorum.QuorumCnxManager$SendWorker.run(QuorumCnxManager.java:685) > 2017-11-07 02:54:32,135 [myid:2] - WARN [SendWorker:1:QuorumCnxManager$SendWorker@706] - Send worker leaving thread > {code} > From the reported occurrences, it looks like this is a problem only when the node with the smallest {{myid}} loses connection. -- This message was sent by Atlassian JIRA (v7.6.3#76005)